Fixed dashing of the same file using -dash-ctx, and fixed dashing across several period (ex: -dash-ctx test.cfg file.mp4:period=X, where X is the period name) 
Fixed dashing of the same file using -dash-ctx, and fixed dashing across several period (ex: -dash-ctx test.cfg file.mp4:period=X, where X is the period name) 

git-svn-id: ab66a9de07fa9d47c5829c82992f5279466c775f@5036 63c20433-aa62-49bd-875c-5a186b69a8fb

epam/gpac,drakeguan/gpac,drakeguan/gpac,canatella/gpac,rbouqueau/gpac_brew_travis,DmitrySigaev/gpac,ARSekkat/gpac,RodolpheFouquet/gpac,nguyen-viet-thanh-trung/gpac,gpac/gpac,rbouqueau/gpac,drakeguan/gpac,DmitrySigaev/gpac,rbouqueau/gpac,RodolpheFouquet/gpac,rbouqueau/gpac,DmitrySigaev/gpac,gpac/gpac,drakeguan/gpac,ARSekkat/gpac,psteinb/gpac,RodolpheFouquet/gpac,rbouqueau/gpac,gpac/gpac,psteinb/gpac,ARSekkat/gpac,aymanelyaagoubi/gpac,porcelijn/gpac,DmitrySigaev/gpac,nguyen-viet-thanh-trung/gpac,Bevara/Access-open,Bevara/Access-open,canatella/gpac,epam/gpac,canatella/gpac,RodolpheFouquet/gpac,porcelijn/gpac,ARSekkat/gpac,rbouqueau/gpac,vladimir-kazakov/gpac,psteinb/gpac,gpac/gpac,rbouqueau/gpac_brew_travis,Bevara/Access-open,emmanouil/gpac,porcelijn/gpac,canatella/gpac,Bevara/Access-open,Bevara/Access-open,emmanouil/gpac,emmanouil/gpac,gpac/gpac,aymanelyaagoubi/gpac,epam/gpac,nguyen-viet-thanh-trung/gpac,rauf/gpac,DmitrySigaev/gpac,vladimir-kazakov/gpac,RodolpheFouquet/gpac,epam/gpac,rbouqueau/gpac_brew_travis,aymanelyaagoubi/gpac,gpac/gpac,drakeguan/gpac,RodolpheFouquet/gpac,rauf/gpac,aymanelyaagoubi/gpac,vladimir-kazakov/gpac,epam/gpac,epam/gpac,rbouqueau/gpac,rbouqueau/gpac,vladimir-kazakov/gpac,ARSekkat/gpac,nguyen-viet-thanh-trung/gpac,gpac/gpac,aymanelyaagoubi/gpac,rauf/gpac,rauf/gpac,rbouqueau/gpac_brew_travis,psteinb/gpac,aymanelyaagoubi/gpac,rauf/gpac,rbouqueau/gpac_brew_travis,psteinb/gpac,porcelijn/gpac,vladimir-kazakov/gpac,drakeguan/gpac,DmitrySigaev/gpac,psteinb/gpac,rbouqueau/gpac_brew_travis,emmanouil/gpac,vladimir-kazakov/gpac,rauf/gpac,nguyen-viet-thanh-trung/gpac,rbouqueau/gpac,porcelijn/gpac,ARSekkat/gpac,nguyen-viet-thanh-trung/gpac,canatella/gpac,canatella/gpac,emmanouil/gpac,gpac/gpac,porcelijn/gpac,emmanouil/gpac,Bevara/Access-open,canatella/gpac